Senior .NET Developer

Job description

Who You Are

You thrive on continuously improving and growing alongside the technological solutions we develop and deliver. As a detail-oriented and analytical professional, you have a passion for ensuring high-quality, robust, and efficient systems. You excel at identifying issues, optimizing processes, and collaborating with cross-functional teams to enhance software performance.

This role is ideal for a proactive individual who enjoys problem-solving, takes pride in maintaining high standards, and is committed to delivering seamless user experiences by ensuring software meets the highest quality standards.

Who We Are

MAS Global is a leader in digital engineering services, specializing in custom software engineering, cloud modernization, and expanding our leadership in Data and AI-driven solutions. With onshore and nearshore teams in the same time zones, we deliver innovative and efficient solutions that streamline digital outcomes for midsize and global brands like Johnson Controls, Dell, JPMorgan Chase, and Bloomberg.

Headquartered in Tampa, Florida, with a nearshore office in Medellín, Colombia, and teams across the US and LATAM, MAS has been recognized five times by Inc. 5000 as one of the fastest-growing companies in the United States. As a 100% women-owned and founder-led company, we also have a foundation, MAS Future, dedicated to impacting 1M women and Latinos through tech education and job opportunities.

At MAS, a certified Great Place to Work, we are shaping the future of digital engineering through innovation, collaborative partnerships, and purpose-driven impact.

What You’ll Do

• Contribute to application development through the entire lifecycle of analysis, design, development, testing and implementation and support.
• Write code that is compliant with architecture and design principles, that is performant, secure, scalable, testable, and maintainable.
• Perform unit and system level testing on applications.
• Integrate software with existing systems.
• Support, maintain, and document software functionality.

What We Look For

• 5+ years application development experience with C#, .Net, .Net Core, EF, EF Core, SQL, Visual Studio ²⁰¹⁹⁄₂₀₂₂, Azure DevOps, and CI/CD implementations.
• 3+ years with Blazor (Nice to have), Razor pages, HTML, CSS, Bootstrap, and JavaScript frameworks.
• 3+ years of experience developing Web APIs.
• Application architecture and patterns like API architecture and best practices, MVC, SOLID principles exception handling and logging.
• Application security (MSAL, OAuth 2.0, OIDC, JWT) including API security and UI security (authentication and authorization.
• Excellent understanding of ASP. NET & Core frameworks and Entity and Entity Core frameworks.
• SQL queries performance improvements including indexes, types of indexes.
• Experience developing for cloud (Azure is preferred).
• Deep understanding of SOLID principles and Clean Code Architecture.
• Deep understanding of object-oriented programming concepts and familiarity with architecture and design patterns including CQRS, MVC and Circuit-Breaker.
• Experience with Postman and/or Swagger.
• Experience with Serilog and Elastic Search or similar technology is a plus.
• Experience with test driven development.
• Experience with Agile/Scrum methodology.
• Fluency in written and spoken English.

Our Values

At MAS, we believe in the power of “MORE.” This belief is the foundation of our core values, guiding our actions and driving our commitment to excellence, accountability, collaboration, and growth.

• Client Value Obsession We strive for MORE in every client interaction, delivering the highest levels of excellence by proactively understanding and addressing our clients’ needs.
• Driven by Action and accountability We embody MORE by upholding the highest standards of reliability and commitment.
• One Team One Voice We foster a culture of MORE through collaboration and inclusivity. We value diverse perspectives, support, and improve each other, and commit to decisions as a unified team.
• Growth Mindset We embrace MORE by thriving on change and innovation. Our commitment to continuous learning and personal development, valuing constructive feedback, and focusing on growth opportunities ensures that we remain resilient and forward-thinking.

At MAS Global, people from diverse backgrounds come together to make an impact and be their authentic selves. MAS Global is a woman-owned business. We are proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations, and ordinances.

We are committed to the accessibility needs of applicants and employees. We provide reasonable accommodations to job applicants with physical or mental disabilities. Applicants with a disability who require reasonable accommodation for any part of the application or hiring process should inform their recruiting contact upon initial connection.